Muestra

Wall. Castle. Castellet i la Gornal. Catalunya. Spain.

Causas de la patología

Biological attack. Growth of Parietaria officinalis ssp.judaica (pellitory-of-the-wall) in the masonry joints on land and accumulates moisture. That favors the plant has an extensive radicular system. The dispersal seeds is favored by ants, among other agents, leading to invasive colonization.